A301.计算邮费

#include<iostream>
using namespace std;
int main(){
	int n,money=0;
	char ch;
	cin>>n>>ch;
	money+=8;
	if(n>1000){
		n-=1000;
		money+=(n/500*4);
		if(n/500.0-n/500>0){
			money+=4;
		}
	}
	if(ch=='y') money+=5;
	cout<<money;
	return 0;
}